Improvement in studs



dn-ined U-Qtatrt JAMES e. KENYON, on PRoViDENcE, RHODE ISLAND.

Letters Patent No. 90,948,`dated June 8, 1869.

IMPROVEMENT IN sTUDs.

The Schedule referred to in these Letters Patent and making part of thellamel To all whom itfmay concern Be it known that I, J AMES G. KENYON,of the city and county of Providence,4 in the State of Rhode Isl# and,have invented a new and useful Improvement in Shirt-Studs; and I dohereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, in which- Figure 1 represents aside View of my invention as locked together when in use.

Figures Zand 3 are views of the top; the one, a side view the other, aView of' the under surface.

Figures 4 and 5 are views of the bottom part; the one a side, and theother' a sectional view.

Figures 6, 7, 8, and 9, are detailed parts.

In the accompanying drawings, fig. 1 represents a shirt-stud or button,well known as an article of jewelry, A representing the post of' thetop, as shown on iig. 2, 'and B, the tubular post or socket of thebottom,

as shown on iig. 4. v

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

Thepost A, iig. 2, being the proper size to t the tube or socket B, Imake, on its side, a groove or channel, called the main channel, havingits entrance or mouth at the end, iig. 3. A suitable distance from thisend, running from the main channel, iig. 2, I make a side channel, whichside channel is' cut concentric with the centre of A. A recess is madeat the end of this side channel, for the purpose of locking A and Btogether.

The tube or socket- B is' provided with a projection or pin, e, on itsinner surface, as shown on section, iig. 5. This pin is made so that itcan pass easily along in the main channel of A, and be turned into therecess at the end of the side channel.

A plate, with one or more small points, and a hole through its centre,is soldered or attached to one end of ,socket B, fig. 7.

C, fig. 6, represents a round piece of sheet-metal raised in a die. Theupper surface is made convex,

-g.'8; the under, concave, which I use as a spring.

Fig. 9 represents a cap, for holding the spring C, and to be. attachedto the plate on B, as shown on section, iig. 5.

The spring C, being placed in the ca and the cap soldered or burnishedto the plate, forms one part of the stud, as shownv by Iig. 4.

To use my invention, socket B is passed through an eyelet or button-holeof a shirt, from the under side. The post A ofthe top is then pressedand turned into the socketj B,J(B being held from turning by the pointson theplate, these points entering the fabric.) The pin c' enters themain channel on A.l The end of post A brings up against the sphericalspring C, and, by a little pressure, the centre is depressed, so thatthe pin e canbe turned into the side channel, and, by the reaction ofthe spring, forced into the recess, thus securing and Ylocking the twoparts together. To remove the same,

press the top, and turn the opposite direction.

The same principle could be made by forming they channel in socket B,and making a pin on A, to slide into this channel. v

What-I claim as my"inventioh, and desire to secure Witnesses:l

CHARLES L. SPENCER, E. E. SHEPARDSON.

